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3 years ago

For the function y = -10x find the matching y-value when x = 3

Mathematics

2 answers:

alexgriva [62]3 years ago

7 0

Answer:

-30

Step-by-step explanation:

y = -10x is a function that can also be represented by f(x) = -10x. We are to evaluate this function at x = 3. To do this, replace both instances of x in this function by 3 and simplify the result:

f(3) = -10(3) = -30

Alchen [17]3 years ago

6 0

Answer:

y= -30

Step-by-step explanation:

THis is because you substitue 3 for X and then multiply -10 and 3 and a negative times a positive is a negative so -10 times 3 is -30

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stich3 [128]

Answer: About 10 ft.

Use Pythagorean's Theorem!

c= $\sqrt{9^2+3^2}$

9 * 9 = 81

3 * 3 = 9

81 + 9 = 90

$\sqrt{90\\}$ = 3 $\sqrt{10}$ ≈ 10 ft.

3 0

3 years ago

The sum of two numbers is -36. Their difference is 68

trasher [3.6K]

Answer:

Step-by-step explanation:

Let the numbers be x and y

x + y = -36........(1)

x - y = 68..........(2)

Adding (1) and (2)

2x = 32

x = 32/2

x = 16

And x + y = -36....(1)

16 + y = -36

y = -36 - 16

y = -52

The number are 16 and -52

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3 years ago

Alicia needs to purchase carpet to cover a triangular space. The space has a base length of 10 ft and a height of 6.4 ft.

Vika [28.1K]

Answer:

Alicia needs 32ft² of carpet to cover the space

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2 years ago

A 90 percent confidence interval for the slope of a regression line is determined to be (-0.181, 1.529). Which of the following

GenaCL600 [577]

Answer: a. The correlation coefficient of the data is positive.

Step-by-step explanation:

Estimated slope of sample regression line = $\dfrac{Upper \ limit + lower\ limit}{2}$

Here , confidence interval : (-0.181, 1.529)

Estimated slope of sample regression line = $\dfrac{-0.181+1.529}{2}$

$=\dfrac{1.348}{2}\\\\=0.674\ \ \ \ [\text{ positive}]$

⇒Correlation coefficient(r) must be positive, So a. is true.

But, d. and e. are wrong(0.674 ≠ 0 or 1.348).

We cannot check residuals or its sum from confidence interval of slope of a regression line, so b is wrong.

We cannot say that scatterplot is linear as we cannot determine it from interval, so c. is wrong

So, the correct option : a. The correlation coefficient of the data is positive.

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3 years ago

QUESTION 19 PLEASE HELP ME ASAP

BARSIC [14]

Answer:

changes over time

Step-by-step explanation: its going up not staying at one spot

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3 years ago

For the function y = -10x find the matching y-value when x = 3​

For the function y = -10x find the matching y-value when x = 3